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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Linear
P253 Special
Hemmi
Japan
Plastic
1967
25 cm
General Purpose
Notes:
"No visible Hemmi date code. This rule's scales were copied for the Hemmp DP121 overhead projector rule , suggesting that university students were encouraged to use the P253 rule."
Image 1
Image 2
Image 3
